Outlook will not open in safe mode

If Outlook is not opening even in Safe Mode and you're encountering installation errors, it could be due to the underlying architecture changes in the classic Outlook. In the new Outlook, the need for Safe Mode has been significantly reduced due to improved stability and error handling. However, if you're still using classic Outlook and facing issues, here are some steps you can take:

1. Check Installation Type: Determine if your Office installation is Click-to-Run or MSI-based. This can affect how you troubleshoot the issue. You can find this by opening an Office application, going to the File menu, and selecting Account or Office Account.
2. Repair Office: Since you've reinstalled Office, you might want to try repairing it again. Go to 'Programs and Features' in the Control Panel, find Microsoft Office, and select the repair option.
3. Selective Startup: Instead of Safe Mode, you can try using Selective Startup to see if that allows Outlook to open. You can do this by pressing Windows Key + R, typing msconfig, selecting Selective startup, and unchecking Load system services and Load startup items. Then, restart your computer.
4. Contact Support: If the issue persists, consider reaching out to Microsoft Support for further assistance, especially if it’s related to installation errors.

These steps should help you troubleshoot the issue with Outlook not opening in Safe Mode.

Hi @Vince Hannant

Thank you for posting your question in the Microsoft Q&A forum.

Can you please provide the exact error message?

Which version of Outlook are you using? (Outlook 365, 2021, 2019, 2016,...)

Here are some basic troubleshooting steps you can try:

Repair an Office application - Microsoft Support (Choose Repair Online)

Create an Outlook profile - Microsoft Support This could help if your profile is corrupted and Outlook cannot recognize it, creating a new one might help.

Please try and let me know if it works for you.

I look forward for your reply.

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